Change button color in AlertDialog

问题:

How can I change the color of the button(s) in an AlertDialog in Android?

回答1:

Here is how I did.

AlertDialog.Builder customBuilder = new AlertDialog.Builder(new ContextThemeWrapper(this,android.R.style.Theme_Dialog));

customBuilder.setTitle(R.string.popup_error_title);
customBuilder.setNegativeButton("Exit application", new DialogInterface.OnClickListener() {  
    public void onClick(DialogInterface dialog, int which) {  
        MyActivity.this.finish();
    }  
});

AlertDialog dialog = customBuilder.create();
dialog.show();

Button b = dialog.getButton(DialogInterface.BUTTON_NEGATIVE);

if(b != null) {
    b.setBackgroundDrawable(getResources().getDrawable(R.drawable.my_button));
}

I find the drawable here

回答2:

Since most people are probably using a DialogFragment by now I ran into some issues and clicked my way through several SO answers to solve those. Let me post my current solution.

I ended up setting the button-background with custom drawables as already suggested several times. However, this was not yet possible in the onCreateDialog-method of the DialogFragment. You can either do this e.g. in onStart(), or (which is what I preferred) in the onShow-listener of the dialog! Keep in mind though, you need to invalidate your buttons after the changes then.

As for the margins: simple remove the padding in your Drawable-XML for the buttons.

#onCreateDialog in your DialogFragment:

@Override
public Dialog onCreateDialog(final Bundle savedInstanceState) {
  AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

  // setup your dialog here...

  builder.setNegativeButton(getString(R.string.cancel), new DialogInterface.OnClickListener() {
    @Override
    public void onClick(final DialogInterface dialog, final int which) {
      // do something
    }
  });

  builder.setPositiveButton(getString(R.string.ok), new DialogInterface.OnClickListener() {
    @Override
    public void onClick(final DialogInterface dialog, final int which) {
      // do something
    }
  });

  final AlertDialog dialog = builder.create();

  dialog.setOnShowListener(new DialogInterface.OnShowListener() {
    @Override
    public void onShow(final DialogInterface dialog) {
      Button negativeButton = ((AlertDialog)dialog).getButton(DialogInterface.BUTTON_NEGATIVE);
      Button positiveButton = ((AlertDialog)dialog).getButton(DialogInterface.BUTTON_POSITIVE);

      // this not working because multiplying white background (e.g. Holo Light) has no effect
      //negativeButton.getBackground().setColorFilter(0xFFFF0000, PorterDuff.Mode.MULTIPLY);

      final Drawable negativeButtonDrawable = getResources().getDrawable(R.drawable.alert_dialog_button_light_red);
      final Drawable positiveButtonDrawable = getResources().getDrawable(R.drawable.alert_dialog_button_light_green);
      if (Build.VERSION.SDK_INT >= 16) {
        negativeButton.setBackground(negativeButtonDrawable);
        positiveButton.setBackground(positiveButtonDrawable);
      } else {
        negativeButton.setBackgroundDrawable(negativeButtonDrawable);
        positiveButton.setBackgroundDrawable(positiveButtonDrawable);
      }

      negativeButton.invalidate();
      positiveButton.invalidate();
    }
  });

  return dialog;
}

Drawable-XML example for a button:

<?xml version="1.0" encoding="utf-8"?>
<selector
  xmlns:android="http://schemas.android.com/apk/res/android">

  <item android:state_pressed="true" >
    <shape>
      <gradient
        android:startColor="@color/alert_dialog_button_green_pressed1"
        android:endColor="@color/alert_dialog_button_green_pressed2"
        android:angle="270" />
    </shape>
  </item>

  <item android:state_focused="true" >
    <shape>
      <gradient
        android:endColor="@color/alert_dialog_button_green_focused1"
        android:startColor="@color/alert_dialog_button_green_focused2"
        android:angle="270" />
    </shape>
  </item>

  <item>
    <shape>
      <gradient
        android:endColor="@color/alert_dialog_button_green1"
        android:startColor="@color/alert_dialog_button_green2"
        android:angle="270" />
    </shape>
  </item>
</selector>

Don't forget to define your colors in the res\values\colors.xml, e.g. like this (I didn't want a gradient, therefore colors 1 & 2 are the same):

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <color name="alert_dialog_button_green1">#b4099930</color>
  <color name="alert_dialog_button_green2">#b4099930</color>
  <color name="alert_dialog_button_green_focused1">#96099930</color>
  <color name="alert_dialog_button_green_focused2">#96099930</color>
  <color name="alert_dialog_button_green_pressed1">#96099930</color>
  <color name="alert_dialog_button_green_pressed2">#96099930</color>
</resources>

回答3:

Here is some example :

AlertDialog.Builder b = new AlertDialog.Builder(all.this);

b.setMessage("r u wan't 2 exit");
b.setCancelable(false);

b.setNegativeButton("no", new DialogInterface.OnClickListener() {
    public void onClick(DialogInterface dialog, int which) {
        dialog.cancel();    
    }
});

b.setPositiveButton("yes", new DialogInterface.OnClickListener() {
    public void onClick(DialogInterface dialog, int which) {
        Intent i=new Intent(getBaseContext(), s.class);
        startActivity(i);
    }
});

AlertDialog a=b.create();

a.show();

Button bq = a.getButton(DialogInterface.BUTTON_NEGATIVE);  
bq.setBackgroundColor(Color.BLUE);

回答4:

I have done by this code it might help you:

AlertDialog.Builder builder1 = new AlertDialog.Builder(this); 
        builder1.setCancelable(true);
     builder1.setTitle("abc");
      builder1.setMessage("abcdefg");
      builder1.setInverseBackgroundForced(true);
     builder1.setPositiveButton("Yes",
             new DialogInterface.OnClickListener() {
         public void onClick(DialogInterface dialog, int id) {
             dialog.cancel();
         }
     }); 

     builder1.setNegativeButton("No",
             new DialogInterface.OnClickListener() {
         public void onClick(DialogInterface dialog, int id) {
             dialog.cancel();
         }
     });

     AlertDialog alert11 = builder1.create();
     alert11.show(); 

     Button buttonbackground = alert11.getButton(DialogInterface.BUTTON_NEGATIVE); 
     buttonbackground.setBackgroundColor(Color.BLUE); 

     Button buttonbackground1 = alert11.getButton(DialogInterface.BUTTON_POSITIVE); 
     buttonbackground1.setBackgroundColor(Color.BLUE);

回答5:

I wanted to solve this with themes rather than extra code since it feels cleaner to me to have all the styling-related stuff in the styles.xml. What I did was based on Arade's answer and this other question:

<style name="AlertDialogDanger" parent="Theme.AppCompat.Light.Dialog.Alert">
    <item name="colorAccent">@color/error</item>
</style>

This will change the color of the button text of any alert dialog you create with style AlertDialogDanger. To do so:

    new AlertDialog.Builder(new ContextThemeWrapper(this, R.style.AlertDialogDanger))
            .setMessage("Really delete?")
            .setPositiveButton("Delete", null)
            .setNegativeButton("Cancel", null)
            .create().show();

回答6:

we can change alert dialog button text colour using Style.

 AlertDialog.Builder dialog = new AlertDialog.Builder(context, R.style.yourDialog);
    dialog.setTitle(R.string.title);
    dialog.setNegativeButton(R.string.no, new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialogInterface, int i) {
            //code here 
        }
    });
    dialog.setPositiveButton(R.string.yes, new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialogInterface, int i) {
            //do here 
        }
    });

    dialog.show();

Style.xml

<style name="yourDialog" parent="Theme.AppCompat.Light.Dialog.Alert">

    <item name="android:colorAccent">@color/themeColor</item>
    <item name="android:colorPrimary">@color/themeColor</item>

</style>

回答7:

I think there are developer who wish to extend the AlertDialog class and define the buttons colors withing class definition. For such purpose you can use this code:

class MyDialog extends AlertDialog {
    public MyDialog(final Context context) {
        super(context); 
        setOnShowListener(new OnShowListener() {
            @Override
            public void onShow(DialogInterface dialog) {
                Button negativeButton = getButton(DialogInterface.BUTTON_NEGATIVE);  
                Button positiveButton = getButton(DialogInterface.BUTTON_POSITIVE);

                negativeButton.setBackgroundColor(Color.GREEN);
                positiveButton.setBackgroundColor(Color.RED);
            }
        });
    }
}

回答8:

To Change the Buttons color of the AlertDailog

Code:

// Initialize AlertDialog & AlertDialog Builder
AlertDialog.Builder builder = new AlertDialog.Builder(YourActivity.this);
builder.setTitle(R.String.AlertDialogTitle);
...........
......... 
//Build your AlertDialog 
AlertDialog Demo_alertDialog= builder.create();
Demo_alertDialog.show();

//For Positive Button:
Button b_pos; 
b_pos=Demo_alertDialog.getButton(DialogInterface.BUTTON_POSITIVE);
if(b_pos!=null){
   b_pos.setTextColor(getResources().getColor(R.color.YourColor));
   }    


//For Neutral Button:
Button b_neu;
b_neu=Demo_alertDialog.getButton(DialogInterface.BUTTON_NEUTRAL);
if(b_neu!=null){
   b_neu.setTextColor(getResources().getColor(R.color.YourColor));
   }

//For Negative Button:
Button b_neg;
b_neg=Demo_alertDialog.getButton(DialogInterface.BUTTON_NEGATIVE);
if(b_neg!=null){
   b_neg.setTextColor(getResources().getColor(R.color.YourColor));
   }

回答9:

if you are using DialogFragment ( android.app.DialogFragment ) then you can overwrite onStart method to get handle of all the buttons (Positive, Negative and Neutral).

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
    View eventEditDialogView = View.inflate(this.getActivity(), R.layout.event_edit_dialog,
                                            null);

    builder.setTitle(getLocalizedString("edit_event"))
            .setView(eventEditDialogView)
            .setPositiveButton(getLocalizedString("all_events"), new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int id) {
                }
            })
            .setNegativeButton(getLocalizedString("this_event"), new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int id) {
                }
            })
    return builder.create();
}

 @Override
    public void onStart() {
        super.onStart();
    Button positive = ((AlertDialog) getDialog()).getButton(AlertDialog.BUTTON_POSITIVE);
    positive.setTextColor(Color.BLACK);
    positive.setBackgroundColor(getResources().getColor(R.color.GrayBGColor));
}

All the above solutions will work with AlertDialog or Dialog created on same activity or Fragment but not on DialogFragment created separately.

回答10:

    //el resto
    AlertDialog a=alertDialog.create();
    cambiar_color_texto_alertdialog(a);

}

public void cambiar_color_texto_alertdialog(AlertDialog a){
    a.show();
    Button BN = a.getButton(DialogInterface.BUTTON_NEGATIVE);
    BN.setTextColor(parseColor("#2E9AFE"));
    Button BA = a.getButton(DialogInterface.BUTTON_POSITIVE);
    BA.setTextColor(parseColor("#2E9AFE"));
}

回答11:

no you cant change the color or images or background of the default buttons of alert boxes. For customization you will need to make you on custom dialog box like this.

public class TryAgainAlert extends Dialog implements OnClickListener
{
    @Override
 public boolean onKeyDown(int keyCode, KeyEvent event)
 {
  if (keyCode == KeyEvent.KEYCODE_BACK)
  {   

   Intent i = new Intent(getApplicationContext(), MainMenu.class);
   finish();
   startActivity(i);

   return true;
  }
  return super.onKeyDown(keyCode, event);
 }


    TextView scores;
    Button tryagain,mainmenu,submit;


     public TryAgainAlert(Context context) {
        super(context);

        setContentView(R.layout.tryagainalert);

        scores=(TextView)findViewById(R.id.text);



        tryagain= (Button) findViewById(R.id.trya);
        mainmenu= (Button) findViewById(R.id.submitscore);
        submit= (Button) findViewById(R.id.mainmenu);

    }


    @Override
    public void onClick(View v) {
        if(v == tryagain)
        {

        else if (v==mainmenu)
        {


        }
        else if (v == submit)
        {

        }
    }

}

you can do what ever you want with the XML file. I hope it will help. Thanks

回答12:

The color of the buttons and other text can also be changed using appcompat :

<style name="AlertDialogCustom" parent="Theme.AppCompat.Light.Dialog.Alert">
    <item name="android:colorPrimary">@color/flexdrive_blue_1</item>
    <item name="android:textColorPrimary">@color/flexdrive_blue_6</item>
    <item name="android:colorAccent">@color/flexdrive_blue_1</item>
    <item name="colorPrimaryDark">@color/flexdrive_blue_4</item>
</style>

回答13:

Are you referring to the neutral, positive and negative buttons? Or to buttons you included in the layout?

If you are referring to the former, then yes you can. Check out the Custom Button section in this tutorial. You basically need an XML file that will tell your button which drawable/color to use for each state change. You can then set this XML file as your button's background.